Malicious PDF — malware analysis report

Static analysis result for SHA-256 125f43495c236d6d…

MALICIOUS

PDF

35.8 KB Created: 2021-06-25 17:16:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 4c1c87a3c17888bf2e74811d6f379db1 SHA-1: 363c89680aaa8ea1786547295838829f6e03ada1 SHA-256: 125f43495c236d6d2d680bca67e05b69bdc670c9ddfea88161ee264f872f294e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of game hacks and generators to trick users into clicking malicious links. The embedded URLs, such as http://netcdn.co/app/431946152/roblox-jailbreak-money-hack-no-verification-game-hack, are identified as malicious redirectors. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a phishing or redirection attack, likely intended to lead users to further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.co/app/431946152/roblox-jailbreak-money-hack-no-verification-game-hack In PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-hack-without-human-verification-india_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/reaper-quest-cheats-engine-roblox-super-power-taining-simulator_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-blogspot_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/apk-hack-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-hack-twitter_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-hack-tycoons-on-roblox-with-cheat-engine-64_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-spins_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/roblox-codes-robux-free_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-hack-denisdaily-on-roblox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-hack-ios-download-2021_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/google-play-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/free-spins-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-make-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/robux-hack-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003264.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3264 22688 bytes
SHA-256: a2d3216ad6aca4d9fe068652998520bfabdf041d31b6b186a72b12c4794d8b0c
font_01_sfnt_off00006546.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6546 19556 bytes
SHA-256: 27e9e3ede721c7b7c3c8779e6a98ba8427478b89f9129faf419d430886faa32e

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